Can someone help with AHI score for MyAir? It changes throughout the night awake.

[Joeyk74]

The other night I slept about 3 hours.  Had to use the bathroom so turned the APAP off and the score came up as 0.5 (then within seconds went up to 0.8).  I put it back on after but couldn’t fall back asleep.  Then I noticed the air got stronger and I couldn’t breath in an out so I turned it off and on again.  Seems to settle to a lower setting if I do that.  When I turned it off the AHI said 2.5.  How did it change from 0.8 to 2.5 when I hadn’t gone back to sleep?   Tonight I was up again after 3 hours and it said 3.5.  Barely could sleep then it said 5.

[Old Steve]

 When people change position and they are still awake or partially awake will sometimes hold their breath, the CPAP machine doesn't know that they are awake, it thinks it's a Clear Airway because they were not breathing.  The machine counts it as an apnea. This is not uncommon...